What technology is the Steam Link app using to stream games to phones?

It's using the same Steam Remote Play technology used in the Steam Link hardware. Under the hood we're doing real-time encoding of H.264 video and sending it over a custom low-latency network protocol, then displaying it on the client.

Which devices can use it?

On Android, we are releasing in beta so we can do more exhaustive testing. At the start of the beta, we are supporting Android 5.0 or newer. On Apple hardware we support any iPhone or iPad running iOS 11.0 or later and Apple TV running tvOS 11.0 or later.

Can I adjust my settings for better performance quality?

Yes. There is an advanced settings menu option that allows you to tune streaming resolution and bitrate for the best experience on your setup. Over a 5 GHz network, our target is 1080p at 60 FPS with good quality for most scenes. If you have a powerful gaming rig, wired network, and a very good client device, it's possible to stream at 4K 60 FPS.

What about aspect ratio differences and screen sizes?

Black bars on the edges are automatically added to deal with aspect ratio differences, and the video is scaled to handle different screen sizes. On mobile devices you can use two-finger pinch and pan gestures to zoom in as needed.

How much does it cost?

The Steam Link app is available free of charge. No additional charges or service fees apply.

Is my existing Steam Link hardware still useful?

The dedicated Steam Link hardware units support a wide variety of input devices and are specifically designed for low latency streaming to your TV. We are continuing to support the product and believe it is a valuable part of the Steam Link ecosystem.